甘肃东乡晚中新世新发现的副板齿犀(奇蹄目、犀科)化石

摘要

Parelasmotherium linxiaense sp. nov.,discovered from the Hipparion fauna in Dongxiang County,Gansu Province,China,has large size,relatively weak enamel plications,and marked crista and hypocone to be distinguished from P.schansiense and P.simplum. The first discovery of the lower cheek teeth of Parelasmotherium is very important,because we can recognize more characters of Parelasmotherium different from those of Sinotherium based on them. This new species has an accurate horizon,and its age is the early Late Miocene.